From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7813 invoked by alias); 20 Feb 2006 15:07:08 -0000 Received: (qmail 7707 invoked by uid 22791); 20 Feb 2006 15:07:06 -0000 X-Spam-Check-By: sourceware.org Received: from omr1.networksolutionsemail.com (HELO mail.networksolutionsemail.com) (205.178.146.51) by sourceware.org (qpsmtpd/0.31) with SMTP; Mon, 20 Feb 2006 15:07:04 +0000 Received: (qmail 25582 invoked from network); 20 Feb 2006 15:07:02 -0000 Received: from unknown (HELO rivatek.dnsalias.net) (67.52.40.201) by omr1.mgt.bos.netsol.com with SMTP; 20 Feb 2006 15:07:02 -0000 Received: by rivatek.dnsalias.net (Postfix, from userid 1000) id 63302542F3; Mon, 20 Feb 2006 09:07:03 -0600 (CST) To: ecos-discuss@ecos.sourceware.org From: Grant Edwards In-Reply-To: <6.1.2.0.2.20060219200723.045f6498@66.125.189.29> References: <6.1.2.0.2.20060219200723.045f6498@66.125.189.29> Date: Mon, 20 Feb 2006 15:07:00 -0000 Message-Id: <20060220150703.63302542F3@rivatek.dnsalias.net> Mailing-List: contact ecos-discuss-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: ecos-discuss-owner@ecos.sourceware.org Subject: [ECOS] Re: Random question about performance X-SW-Source: 2006-02/txt/msg00199.txt.bz2 In gmane.os.ecos.general, you wrote: > So Redboot isn't a speed demon, I knew that, but pings to redboot take on > average 4 - 6 milliseconds. Pings to UNIX running on the same hardware take > .4 - .8 milleseconds. That is not quite 10x slower. I know Redboot is a > polled networking system but it doesn't have to context switch either. > What's up with that? In some modes, RedBoot only checks for network input once every 10ms. That means average ping times of around 5ms. On my platform, I increased the polling rate to 1-2 ms to make RedBoot more responsive to network traffic. -- Grant Edwards grante Yow! How's the wife? Is at she at home enjoying visi.com capitalism? -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss